"Google Hummingbird Algorithm update" Everyone is talking about is talking about this update in the search market as Google rolled it out quietly in Past month without any prior announcement. People are calling it a biggest algo update after caffeine which was rolled out in 2010 and caused the giants of Search such as Overstock, alibaba, and Tradekey.
First of all We need to understand the reason of this update, It is a Technological update for Google Search that caused 90% queries worldwide. Google's took this step to handle more complex queries.
It is officially announced by Google's Senior VP on Google's 15th birthday, Calling Its a result of 15 years hard work. He said: ""Our algorithm had to go through some fundamental rethinking of how we are going to keep our results relevant,"
Greg Kumparak author at TechCrunch Explained this in simple words "
"The main focus, and something that went repeated many a time, was that the new algorithm allows Google to more quickly parse the full question (as opposed to parsing searches word-by-word), and to identify and rank answers to those questions from the content they’ve indexed."
By the way, Caffeine which was rolled out in 2010 was designed to provide fresher results and to Speed up index process.